BBC:- President Donald Trump has said he is likely to close the US border if Mexico does not do more to stop migrants reaching the United States.
The closure would disrupt border crossings, threatening trade worth billions of dollars.
Mr Trump’s threat follows a surge in migrants travelling through Mexico to seek asylum in the US.
Mexico’s President Andrés Manuel López Obrador said he would not be drawn into confrontation on the issue.
Foreign Minister Marcelo Ebrard said in a tweet that Mexico was a “great neighbour” to the US and would “not act on the basis of threats”.
Mr Trump told reporters on Friday: “There’s a very good likelihood that I’ll be closing the border next week, and that will be just fine with me.”
He said it was very easy for Mexico to “stop people from coming up, but they don’t choose to do it”.
The president later wrote a series of tweets which concluded that because the US “lose so much money with them, especially when you add in drug trafficking etc., that the Border closing would be a good thing!”
The US president has also instructed the state department to cut off all direct assistance to El Salvador, Honduras and Guatemala – where many of the migrants come from.
The move has to involve Congress, many of whose members have authorised the monies to tackle the root causes of the migration.